import java.util.HashMap;
import java.util.Map;
import java.util.TreeMap;

/**
 * describe:
 *
 * @author helloworldyu
 * @data 2017/11/29
 */
public class TestMap {
	public static void main(String[] args) {
		Map<Integer,String> map = new HashMap<>();
//		map.compute()
		TreeMap<Integer,String> treeMap = new TreeMap<>();

	}

}